Figure 4From: Nonstandard finite difference variational integrators for nonlinear Schrödinger equation with variable coefficients l 2 -error e k of integrator (14) for (16) withμ=2. Numerical l 2 -error e k of the nonstandard finite difference variational integrator (14) for the NLSE with variable coefficients (16) (μ=2), from t=0 to t=60 with Δt=0.1 and Δx=0.1.Back to article page